发明授权
- 专利标题: Method of purification of salt solutions for electrolysis
- 专利标题(中): 纯化电解盐溶液的方法
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申请号: US09374505申请日: 1999-08-16
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公开(公告)号: US06238544B1公开(公告)日: 2001-05-29
- 发明人: Chisako Oohara , Terumi Matsuoka , Takamichi Kishi , Takako Okuno
- 申请人: Chisako Oohara , Terumi Matsuoka , Takamichi Kishi , Takako Okuno
- 优先权: JP10-259426 19980828; JP11-167141 19990614
- 主分类号: C25B134
- IPC分类号: C25B134
摘要:
In a method of removing impurities, especially iodine and/or silica ions, from a salt solution to be used for electrolysis, the salt solution and zirconium hydroxide are brought into contact with each other under acidic conditions, and the zirconium hydroxide adsorbs the impurities. Thereafter, the zirconium hydroxide containing the adsorbed impurities is brought into contact with an aqueous solution at a higher pH value to desorb the impurities from the zirconium hydroxide, thereby enabling the zirconium hydroxide to be recycled.
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